Abstract
ABSTRACTThe Helical Screw Rheometer (HSR) consists of a helical screw enclosed in a tight fitting cylinder. When the screw is rotated with the system closed it generates a linearly increasing pressure differential along the axis of the screw. The pressure is proportional to the viscosity of a Newtonian fluid. Viscosity of standard Newtonian fluids measured using the HSR correlated well with measurements on a rotational rheometer with cone and plate fixtures. HSR data on non‐Newtonian suspensions analyzed with a power law model (σ= mγa) did not agree as well with results from cone and plate fiiures on the rotational rheometer.
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